1421263290 has 16 divisors (see below), whose sum is σ = 3411031968. Its totient is φ = 379003536.

The previous prime is 1421263273. The next prime is 1421263301. The reversal of 1421263290 is 923621241.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 47375443 = 1421263290 / (1 + 4 + 2 + 1 + 2 + 6 + 3 + 2 + 9 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23687692 + ... + 23687751.

It is an arithmetic number, because the mean of its divisors is an integer number (213189498).

Almost surely, 2^1421263290 is an apocalyptic number.

1421263290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421263290 is an abundant number, since it is smaller than the sum of its proper divisors (1989768678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421263290 is a wasteful number, since it uses less digits than its factorization.

1421263290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47375453.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1421263290 is about 37699.6457543038. The cubic root of 1421263290 is about 1124.3240818801.

The spelling of 1421263290 in words is "one billion, four hundred twenty-one million, two hundred sixty-three thousand, two hundred ninety".